* Easily send email with HTML formatting and attachments * Mail merge and send mass / bulk mail functions * Connect to POP3 and IMAP mail servers, list and download messages locally * Connect to Microsoft Exchange Servers, list, download and send messages * Create and update tasks using iCalendar * Load messages from file or stream (EML, EMLX, MSG, OFT, MBOX, TNEF or MHT formats) * Save messages to file or stream (EML, EMLX, MSG, OFT, or MHT formats) * File format conversion (EML, MSG or MHT formats) * Manipulate message storage files i.e. PST and OST * Create and add Messages, Contacts, Tasks, Notes, Calendar items and Distribution lists to PST * Extract messages, contacts and calendar items from PST in MSG format * Generate dates for specified recurrence patterns according to iCalendar RFC * Manipulating Calendar items using Exchange Web Service (EWS) client * Attach embedded objects and add attachments to emails * Include text and HTML mail body * Mail merge for creating emails from a template * Send iCalendar compliant appointments or meetings * Create customized mail headers.

* Support SMTP commands: HELO, MAIL FROM, RCPT TO, DATA, QUIT. * Support ESMTP commands: EHLO, AUTH LOGIN, AUTH NTLM, AUTH CRAM-MD5. * Support Normal recipient, carbon copy recipient and blind carbon copy recipient. * DNS lookup to send email without specified SMTP server. * Test validity of email address. * Support asynchronous mode and event driving. * Support Text/Html/Alternative body. * Support multiple attachments and embedded pictures. * Import text/html to email body from specified file/URL. * Add customized headers in email. * Save email as specified file. * Load email file for sending. * Mail Queuing with EASendMail Service. * Support Socks4/Socks5/Http proxy connection. * DomainKeys and DKIM signature. * Exchange Web Service and WebDAV. * Gmail SMTP OAUTH/XOAUTH 2.0. * Protocol: SSL v2, SSL v3, TLS v1 * Key Algorithms: RSA, DH * ESMTP command: STARTTLS * Signed and Encrypted Message with digital certificate * Signing Algorithms: rsa-sha1, CRAM-MD5, rsa-sha256 * Encryption Algorithms: RC2, RC4, DES, 3DES, AES * Send email in background. * Support mulitple threadings. * Replace variables in email body text. * Select recipients from database. * Send email in schedule. * Provide failure delivery-report. * Supports .NET Compact Framework 2.0/3.5 * .NET Framework: Separate builds for .NET 1.1, 2.0, 3.5, 4.0, 4.5 * ActiveX/COM: Separate builds for 32bit/x64